An old article "Magnetic Monopole"

Japanese version
Before About 2007 on en.wiki there are an old article titled "Magnetic Monopole", which had the signature by N.J.Hitchin. Of cource, now there is a nice article of the same title in the modern view point. But the old article is rather available and I post it on my BLOG. Because I drove it from my notebook, It might contain some mistakes.

Magnetic Monopole (old version)

But the new version is the following, which starts with Maxwell equation and contains the recent applications, GUT theory and the condensed matter etc..

Magnetic Monopole (current version)